Production, characterization and structural modification of exopolysaccharide-based bioflocculant by Rhizobium radiobacter SZ4S7S14 and media optimization

3 Biotech - Tập 7 - Trang 1-9 - 2017
Bakhtiyor A. Rasulov1,2, Li Li1, Yong-Hong Liu1, Osama Abdalla Mohamad1,3, Min Xiao4, Jin-Biao Ma1, Wen-Jun Li1,4
1Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi, People’s Republic of China
2Institute of Genetics and Plant Experimental Biology, Uzbekistan Academy of Sciences, Kybray District, Uzbekistan
3Environmental Science Department, Institute for Post Graduate of Environment Study, Arish University, Arish, Egypt
4State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou, People’s Republic of China

Tóm tắt

Synthesis of the exopolysaccharide-based bioflocculant Rhizobium radiobacter SZ4S7S14 was researched and medium optimized for enhanced production of bioflocculant. d-Mannose and yeast extract were found to be best carbon and nitrogen sources for maximal yield of bioflocculant. The bioflocculant samples obtained in different media with different carbon and nitrogen sources were further analyzed by SEM-EDX and FT-IR. FT-IR spectroscopy of the bioflocculant samples, obtained in different carbon/nitrogen sources showed slight modification of the structures of biopolymers. SEM micrographs revealed that exopolysaccharide-based bioflocculant of R. radiobacter SZ4S7S14 looks like bricks, and chemical structure of it can be varied due to utilized carbon and nitrogen source.

Tài liệu tham khảo

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